Circuit device and oscillator

Abstract

A circuit device includes an oscillation circuit generating an oscillation signal by oscillating a vibrator, a temperature sensor circuit performing an intermittent operation, a logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit, and a power supply circuit supplying power to the oscillation circuit. The oscillation circuit is disposed in a circuit region, the temperature sensor circuit and the logic circuit are disposed in a circuit region, and the power supply circuit is disposed in a circuit region, which is positioned between the circuit region and the circuit region.

What is claimed is: 
     
       1. A circuit device comprising:
 an oscillation circuit generating an oscillation signal by oscillating a vibrator; 
 a temperature sensor circuit performing an intermittent operation; 
 a logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit; and 
 a power supply circuit supplying power to the oscillation circuit, wherein 
 the oscillation circuit is disposed in a first circuit region, 
 the temperature sensor circuit and the logic circuit are disposed in a second circuit region, 
 the power supply circuit is disposed in a third circuit region positioned between the first circuit region and the second circuit region, and 
 the logic circuit has a latch circuit that latches the temperature data output by the temperature sensor circuit during the operation period and performs the temperature compensation processing based on the latched temperature data even during a stop period of the temperature sensor circuit. 
 
     
     
       2. The circuit device according to  claim 1 , wherein
 the temperature sensor circuit performs the intermittent operation of obtaining temperature data corresponding to temperature during an operation period and stopping an operation of the temperature sensor circuit after outputting the temperature data to the logic circuit. 
 
     
     
       3. The circuit device according to  claim 1 , further comprising:
 an output buffer circuit outputting an output clock signal based on the oscillation signal, wherein 
 the output buffer circuit is disposed in the second circuit region. 
 
     
     
       4. The circuit device according to  claim 1 , wherein
 the first circuit region is a circuit region along a first side of the circuit device, and 
 the second circuit region is a circuit region along a second side, which is an opposite side of the first side, of the circuit device. 
 
     
     
       5. The circuit device according to  claim 4 , further comprising:
 a power supply terminal to which a power supply voltage is input; and 
 a ground terminal to which a ground voltage is input, wherein 
 the power supply terminal or the ground terminal, and the temperature sensor circuit are disposed side by side along a side intersecting the first side and the second side. 
 
     
     
       6. The circuit device according to  claim 5 , further comprising:
 a clock terminal outputting an output clock signal based on the oscillation signal, wherein 
 the temperature sensor circuit is disposed between the power supply terminal and the clock terminal. 
 
     
     
       7. The circuit device according to  claim 4 , wherein
 the oscillation circuit is disposed along the first side, and the temperature sensor circuit is disposed along the second side. 
 
     
     
       8. The circuit device according to  claim 4 , further comprising:
 a clock terminal outputting an output clock signal based on the oscillation signal, wherein 
 the clock terminal is disposed at a corner portion in which a third side, which intersects the first side and the second side, and the second side of the circuit device intersect. 
 
     
     
       9. The circuit device according to  claim 1 , further comprising:
 a power supply terminal to which a power supply voltage is input; and 
 a ground terminal to which a ground voltage is input, wherein 
 the power supply terminal and the ground terminal are diagonally disposed in the second circuit region. 
 
     
     
       10. An oscillator comprising:
 the circuit device according to  claim 1 ; and 
 the vibrator. 
 
     
     
       11. A circuit device comprising:
 an oscillation circuit generating an oscillation signal by oscillating a vibrator; 
 a temperature sensor circuit performing an intermittent operation; 
 a logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit; and 
 a power supply circuit supplying power to the oscillation circuit, wherein 
 the oscillation circuit is disposed in a first circuit region, 
 the temperature sensor circuit and the logic circuit are disposed in a second circuit region, 
 the power supply circuit is disposed in a third circuit region positioned between the first circuit region and the second circuit region, 
 the temperature sensor circuit includes
 a ring oscillator, 
 a counter circuit that performs count processing for an output pulse signal of the ring oscillator by using a clock signal based on the oscillation signal and outputs temperature data based on a count value obtained by the count processing, and 
 a regulator that supplies a regulated power supply voltage to the ring oscillator, and 
 
 the regulator supplies the regulated power supply voltage to the ring oscillator during a period of the intermittent operation. 
 
     
     
       12. The circuit device according to  claim 11 , wherein
 the temperature sensor circuit includes a current setting circuit that operates based on the regulated power supply voltage and sets an operation current of the ring oscillator. 
 
     
     
       13. A circuit device comprising:
 an oscillation circuit generating an oscillation signal by oscillating a vibrator; 
 a temperature sensor circuit performing an intermittent operation; 
 a logic circuit performing temperature compensation processing based on an output of the temperature sensor circuit; 
 a power supply terminal to which a power supply voltage is input; and 
 a ground terminal to which a ground voltage is input, wherein 
 the oscillation circuit is disposed in a first circuit region, 
 the temperature sensor circuit and the logic circuit are disposed in a second circuit region, and 
 the power supply terminal and the ground terminal are diagonally disposed in the second circuit region, 
 a first power supply line that is coupled to the power supply terminal, is wired in the first circuit region, and supplies the power supply voltage to the oscillation circuit in the first circuit region; 
 a first ground line that is coupled to the ground terminal, is wired in the first circuit region, and supplies the ground voltage to the oscillation circuit in the first circuit region; 
 a second power supply line that is coupled to the power supply terminal, is wired in the second circuit region by branching off from the power supply terminal separately from the first power supply line, and supplies the power supply voltage to the temperature sensor circuit and the logic circuit in the second circuit region; and 
 a second ground line that is coupled to the ground terminal, is wired in the second circuit region by branching off from the ground terminal separately from the first ground line, and supplies the ground voltage to the temperature sensor circuit and the logic circuit in the second circuit region.